pgsql: Move strategy numbers to include/access/stratnum.h

Move strategy numbers to include/access/stratnum.h

For upcoming BRIN opclasses, it's convenient to have strategy numbers
defined in a single place.  Since there's nothing appropriate, create
it.  The StrategyNumber typedef now lives there, as well as existing
strategy numbers for B-trees (from skey.h) and R-tree-and-friends (from
gist.h).  skey.h is forced to include stratnum.h because of the
StrategyNumber typedef, but gist.h is not; extensions that currently
rely on gist.h for rtree strategy numbers might need to add a new

A few .c files can stop including skey.h and/or gist.h, which is a nice
side benefit.

Per discussion:
https://www.postgresql.org/message-id/20150514232132.GZ2523@alvh.no-ip.org

Authored by Emre Hasegeli and Álvaro.

(It's not clear to me why bootscanner.l has any #include lines at all.)

Branch
------
master

Details
-------
http://git.postgresql.org/pg/commitdiff/26df7066cc229887d4defdf1d105c0a22b8a88fb

Modified Files
--------------
contrib/btree_gin/btree_gin.c               |    2 +-
contrib/cube/cube.c                         |    2 +-
contrib/hstore/hstore_gin.c                 |    2 +-
contrib/hstore/hstore_gist.c                |    2 +-
contrib/intarray/_int_gin.c                 |    3 +-
contrib/intarray/_int_gist.c                |    2 +-
contrib/intarray/_intbig_gist.c             |    2 +-
contrib/ltree/_ltree_gist.c                 |    2 +-
contrib/ltree/ltree_gist.c                  |    2 +-
contrib/pg_trgm/trgm_gin.c                  |    3 +-
contrib/pg_trgm/trgm_gist.c                 |    3 +-
contrib/seg/seg.c                           |    3 +-
src/backend/access/brin/brin_minmax.c       |    2 +-
src/backend/access/gin/ginarrayproc.c       |    2 +-
src/backend/access/gist/gistproc.c          |    2 +-
src/backend/access/spgist/spgkdtreeproc.c   |    2 +-
src/backend/access/spgist/spgquadtreeproc.c |    2 +-
src/backend/bootstrap/bootparse.y           |    1 -
src/backend/bootstrap/bootscanner.l         |    1 -
src/backend/optimizer/path/equivclass.c     |    2 +-
src/backend/optimizer/path/indxpath.c       |    2 +-
src/backend/optimizer/path/pathkeys.c       |    2 +-
src/backend/optimizer/plan/createplan.c     |    2 +-
src/backend/optimizer/util/predtest.c       |    2 +-
src/backend/utils/adt/jsonb_gin.c           |    2 +-
src/backend/utils/adt/network_gist.c        |   24 ++++-----
src/backend/utils/adt/rangetypes_gist.c     |    2 +-
src/backend/utils/adt/rangetypes_spgist.c   |    2 +-
src/backend/utils/adt/tsginidx.c            |    2 +-
src/backend/utils/adt/tsquery_gist.c        |    2 +-
src/include/access/gist.h                   |   20 -------
src/include/access/nbtree.h                 |    2 +-
src/include/access/skey.h                   |   23 +-------
src/include/access/stratnum.h               |   75 +++++++++++++++++++++++++++
src/include/utils/rangetypes.h              |   20 +++----
35 files changed, 129 insertions(+), 95 deletions(-)